Rail-bond.



No. 807,217. PATENTED DEC. 12, 1905. W. G. STUART. RAIL BOND.

APPLICATION FILED JULY 14. 1904.

Witnesses: Jig 62ft:

' 7%wz 'm UNITED STATES PATIENT orrron.

WILLIAM GRANT STUART, OF NEWBURYPORT, MASSACHUSETTS, ASSIGNOR TOCHASE-SHAWMUT COMPANY, OF NEWBURYPORT, MASSACHUSETTS, A CORPORATIONOFMAINE.

RAIL-BOND.

Specification of Letters Patent.

Patented Dec. 12, 1905.

To (ZZZ whom, it 7%007 concern:

Be it known that I, WILLIAM GRANT STU- ART, of Newburyport, county ofEssex, State of Massachusetts, have invented an Improvement inRail-Bonds, of which the following description, in connection with theaccompanying drawings, is aspecification, like characters on thedrawings representing like parts.

This invention has for its object to improve the construction ofrail-bonds, to the end that a bond of large current-carrying capacitymay be constructed which will occupy but little space, so that it may beplaced between the fish-plate and the rails and attached to the web ofthe rails, although it may be otherwise disposed and attached to otherportions of the rails.

The invention consists in a rail-bond having a flexible intermediateportion and circular bolt-receiving loops at the ends thereof which areformed integral therewith. The bolt-receiving loops may be offset.relatively to the intermediate portion by bending the ends of theintermediate portion at an angle to the end loops occupying planes inparallelism with the intermediate portion, and in such case thebolt-receiving holes in the rails are counterbored to receive the offsetend loops of the bond. The rail-bond is preferably composed of a singlestrip of copper wound upon itself, and the several layers composing theend loops are soldered together, while the several layers composing theintermediate portion remain unattached.

Figure 1 shows in side elevation a rail bond embodying this invention,the fishplate being broken away. Fig. 2 is a plan view of the railbond.Fig. 8 is a vertical .section of the rail-bond and one of the rails,

taken on the dotted lines 3 3, Fig. 1. Fig. 4 is a sectional detail ofone of the end loops and the counterbored rail.

a and I) represent the rails, c the fish-plate, and (1 one of the boltswhich passes through a hole in the fish-plate and through a hole in therail.

The bolt-hole in the rail is counterbored, as best shown in Fig. 4, toreceive the end loop of the rail-bond.

The rail-bond comprises, essentially, an intermediate portion e, havingat each end a circular loop f. The intermediate portion is flexible orextensible. The railbond is preferably composed of anarrow strip ofsheetcopper wound or folded upon. itself to form a laminated bond, andthe several layers are bent or formed at the ends to provide circularend loops The intermediate portion of the bond will be of any shapedesired. The circular end loopsf are offset relatively to theintermediate portion, as shown in Fig. 2, so as to enter thecounterbored bolt-holes in the web of the rails by bending the ends ofthe intermediate portion at an angle, as shown in Fig. 4, the end loopsextending from said angularly-formed ends in planes in parallelism withthe intermediate portion. The end loops are made circular, so as to fitthe counterbored bolt-holes and provide for the bolt which passesthrough said bolt-holes. The several layers composing the circularoffset end loops are soldered together, while the several layerscomposing the intermediate portion remain unattached.

The circular end loopsf when placed in the counterbored bolt-holes areheld securely therein by solder.

The bolts which pass through the boltholes provide against the removalof the bond, and as the bonds are concealed by the fish-plates theirdetachment from the rails by malicious persons is obviated.

Having thus described my invention, what I claim as new, and desire tosecure byLetters Patent, is

1. A rail-bond comprising an intermediate portion bent and turnedrearwardly near its opposite ends and terminating in circular loops, incombination with the meeting ends of two rails having counterbores inwhich said loops are seated, substantially as described.

2. A laminated rail-bond having its ends bent rearwardly and formed intoloops, and rails provided with counterbores in which said loops areseated, substantially as described.

3. A laminated rail-bond having an intermediate portion with its endsbent and turned rearwardly and formed into loops, the faces of which arein a plane parallel with the intermediate portion, substantially asdescribed.

4. A laminated rail-bond having an intermediate portion with its endsbent rear- In testimony whereof I have signed my wardly and formed intoloops, the faces of name to this specification in the presence of whichare in a plane parallel with the face of two subscribing witnesses.

the intermediate portion, and rails provided WILLIAM GRANT STUART. 5with counterbores in which said loops are Witnesses:

seated, and means for securing said loops in BLANOHE B. KIMBALL,

said bores, substantially as described. EDWARD H. ROWELL.

